Chakraborty, Subhasish K.; Chakraborty, Savitri; Bhattacharyya, Anjan; Chowdhury, Ashim published the artcile< Photolysis of oxyfluorfen in aqueous methanol>, Synthetic Route of 35852-58-5, the main research area is UV sunlight oxyfluorfen methanol photolysis.
Photolysis of oxyfluorfen, an herbicide of the nitrodiphenyl ether class, was studied in aqueous methanol under UV and sunlight. UV irradiation was carried out in a borosilicate glass photoreactor (containing 250 ppm oxyfluorfen in 50% aqueous methanol) equipped with a quartz filter and 125 W mercury lamp (maximum output 254 nm) at 25 ± 1°C. Sunlight irradiation was conducted at 28 ± 1°C in borosilicate Erlenmeyer flasks containing 250 ppm oxyfluorfen in 50% aqueous methanol. The samples from both the irradiated conditions were withdrawn at a definite time interval and extracted to measure oxyfluorfen content by gas chromatog.-flame ionization detector for rate study. The half-life values were 20 h and 2.7 days under UV and sunlight exposure, resp. Photolysis of oxyfluorfen yielded 13 photoproducts of which three were characterized by IR spectrophotometer and 1H NMR and 13C NMR spectroscopy. The rest of the photoproducts were identified by gas chromatog.-mass spectrometry (GC-MS) and thin layer chromatog. (TLC). An ionization potential 70 eV was used for electron impact-mass spectrometry (EI-MS) and methane was used as reagent gas for chem. ionization-mass spectrometry (CI-MS). Two of the photoproducts were also synthesized for comparison. The main phototransformation pathways of oxyfluorfen involved nitro reduction, dechlorination, and hydrolysis as well as nucleophiles displacement reaction.
Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes published new progress about Chemical ionization mass spectrometry. 35852-58-5 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H4ClF3O, Synthetic Route of 35852-58-5.
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